| ^CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\): | |
| No ExternalData_CUSTOM_SCRIPT_MissingKey is set for URL template: | |
| ExternalDataCustomScript://MissingKey/%\(algo\)/%\(hash\) | |
| Call Stack \(most recent call first\): | |
| BadCustom3.cmake:[0-9]+ \(ExternalData_Add_Target\) | |
| CMakeLists.txt:[0-9]+ \(include\)$ |